So You Want to Service VRF?

Your email address:

Your name:

Start Quiz!

1. Which of the following is a potential cause of low discharge superheat in VRF systems?

2. True or False: Improper installation is a possible cause of high suction superheat in VRF systems.

3. True or False: VRF systems have low-pressure compressor shells.

4. Where do we measure discharge superheat?

5. True or False: The VRF subcooler refrigerant circuit is the same as the system subcooling.

6. True or False: All VRF systems have a service manual that you can consult for troubleshooting.

7. Daikin VRV systems use ____________ to cool the inverter boards.

8. When you're diagnosing indoor EEV failure, the liquid pipe temp decreasing to evaporation temp within 10 minutes usually indicates:

9. True or False: Shorter flares are best for preventing compressor failure.

10. True or False: In most cases, a second inverted loop in the copper tubing is NOT permitted.

Previous

Comments

loading

To continue you need to agree to our terms.

The HVAC School site, podcast and tech tips
made possible by generous support from